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MgO Partially Stabilized Zirconia (TTZ)

TTZ is a grade of zirconia. The graph bars on the material properties cards below compare TTZ to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Compressive (Crushing) Strength

2190 MPa 320 x 103 psi

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Flexural Strength

710 MPa 100 x 103 psi

Fracture Toughness

9.9 MPa-m1/2 9.0 x 103 psi-in1/2

Knoop Hardness


Poisson's Ratio


Tensile Strength: Ultimate (UTS)

410 MPa 60 x 103 psi

Thermal Properties

Maximum Temperature: Mechanical

650 °C 1200 °F

Maximum Thermal Shock

350 °C 660 °F

Specific Heat Capacity

430 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

2.2 W/m-K 1.2 BTU/h-ft-°F

Thermal Expansion

8.8 µm/m-K

Other Material Properties


5.7 g/cm3 350 lb/ft3

Dielectric Constant (Relative Permittivity) At 1 MHz


Dielectric Strength (Breakdown Potential)

7.7 kV/mm 0.3 V/mil

Electrical Dissipation At 1 MHz


Electrical Resistivity Order of Magnitude

11 10x Ω-m

Common Calculations

Stiffness to Weight: Axial

19 points

Stiffness to Weight: Bending

34 points

Strength to Weight: Axial

20 points

Strength to Weight: Bending

22 points

Thermal Diffusivity

0.88 mm2/s

Thermal Shock Resistance

17 points

Followup Questions

Further Reading

Ceramic and Glass Materials: Structure, Properties and Processing, James F. Shackelford and Robert H. Doremus (editors), 2008

Ceramics and Composites: Processing Methods, Narottam P. Bansal and Aldo R. Boccaccini (editors), 2012

Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005